Perhaps you might be thinking of the passage from Proverbs:
Like an infected tooth or an unsteady foot is (dependence on) a faithless man in time of trouble. Prov 25:19 NAB.
Or perhaps Habakkuk:
Decay invades my bones, my legs tremble beneath me. Hab 3:16 NAB
Or perhaps Sirach:
Why are dust and ashes proud? Even during lifeman's bodydecays. Sirach 10:9 NAB
There is no verse in the Bible that says that cremation is wrong.
There is no such book or verse.
leviticus
Matthew 6:28
It is not biblical.
i never read that
It is found in the bible in the Old testament book of Psalms in chapter 139 verse 14.
Matthew 6.
1John 1, 6, and 7
1 Corinthians 14:40
James 1:27
Proverbs 2:7 .....(chapter 2, verse 7) is one. Psalms 7: 8 is another one.